Top seeds like Rafael Nadal, Andy Murray, Victoria Azarenka and Petra Kvitova will today play their respective opening round matches in the Wimbledon Tennis Championships, taking place at the All England Club in London. In Men's Singles, second seeded Spaniard Rafael Nadal will clash with Thomaz Bellucci of Brazil; while, Britain's fourth seed Andy Murray will meet Nikolay Davydenko of Russia. In Women's Singles, Belarus' second seed Victoria Azarenka will meet Irina Falconi of the United States; while, fourth seeded Czech Petra Kvitova will take on Akgul Amanmuradova of Uzbekistan. Some opening round matches of Men's and Women's Doubles categories will also be played today.Yesterday, in a major upset, America's five time Wimbledon Champion Venus Williams crashed out of the tournament after she was stunned by Elena Vesnina of Russia in straight sets, 1-6, 3-6. However, Novak Djokovic, Roger Federer and Maria Sharapova eased into second round of the tournament.